[Drago]

Falcon 9/Merlin engine ignition is by the chemical reaction of “TEA-TEB”, not by “electrical spark”. TEA-TEB ignites upon exposure to air/oxygen. Also used on the Saturn 5 F-1 engines and the SR-71:

https://en.wikipedia.org/wiki/Triethylborane#Rocket

https://space.stackexchange.com/questions/15403/why-is-tea-teb-chemical-ignition-used-instead-of-spark-ignition

[jonrick46]

Thank you. I am looking forward to the launch.